function preloadImage(imgObj, imgSrc) 
{
	if (document.images) 
	{
		eval(imgObj+' = new Image()');
		eval(imgObj+'.src = "'+imgSrc+'"');
	}
}

function changeImage(imgName, imgObj) 
{
	if (document.images) 
	{
		document.images[imgName].src = eval(imgObj+".src");
	}
}

function twoFrames(pageSrc1, frameName1, pageSrc2, frameName2)
{
	eval('parent.'+frameName1+'.location.href = "'+pageSrc1+'"');
	eval('parent.'+frameName2+'.location.href = "'+pageSrc2+'"');
}

function loadFrame(pageSrc, frameName)
{
	eval('top.'+frameName+'.location.href = "'+pageSrc+'"');
}